Paper-cutting machine.



B. F. BERRY. PAPER CUTTING MACHINE. APPLIGATION FILED mun, 1910. RENEWEDMAY 7 1912.

Patented Jan. 28, 1913.

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B. F. BERRY. PAPER CUTTING MAGBINE. APPLICATION FILED JAN.7, 1910.RENEWED MAY 7, 1912.

= Patented Jan. 28, 1918.

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PAPER CUTTING MACHINE. APPLICATION FILED JAN-7, 1910. RENEWED MAY 7,1912.

Patented M1128 11913.

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Fig. III'is an ,on line IH-HI, Fig. II. Fig. IV is an "ITED STATESPATENT OFFICE.

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Application filed January 7, 1810, Serial No.

To all whom it may concern:

Be it known that I, BENJAMIN F. BERRY, a citizen of-the United States ofAmerica, residing in the city of St. Louis and State of Missouri, haveinvented certain new and useful Improvements in Paper-Cutting Machines,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification.

My invention relates to that character of paper cutting machinescomprisinga movable clamp for holding a pile of sheets of paper to becut and a movable-knife stock adjacent toi'the clamp carrying a knifeadapt-I ed to be lowered to the pile of sheets to cut them, the clampand knife stock being adapted to be lowered successively and elevatedThe present invention has for its object the construction of a papercutting machine of the kind mentioned in which compressed air may beutilized as a power medium for operating the clamp and knife stock, andby theluse of which power medium there-is obtained perfect control ofboth the clamp and knife stock; and, furthermore, a construction isprovided whereby it is made possible to lower and raise the clampindependently of the knife stock in order that the clamp may be againelevated after it has been lowered previous to the operation of theknife, thereby permitting readjustment of the sheets that are to be outif the adjustment thereof is foupd to be imperfect after lowering theclamp,

Fig. I is a front'elevation of my paper cutting machine. with portionsin section. Fig. 11 is an end elevation of the machine. enlarged cr'osssection taken enlarged vertical section taken on line IV-l[V, Fig. I.Fig. V is a horizontal section taken on line V-V, Fig. IV. Fig. V1 is adiagrammatical view illustrating the Specification of Letters Patent.

cylinders and receiver tank, together with the piping and valve throughwhich compressed air is conducted to said cylinders; and receiving tank.

In the accompanying drawings :-1 designa'tes the table of mv papercutting machine which is supported by end frames 2 and 2 that containguideways 3 and i in which I parts coiiperable with them,

the knife stock and clamp of the machine operate respectively. 1

- 5 designates the knife stock which carries a knife or cutter 6 and isadapted to move downwardly in the guideways 3 in an mclineddirection'toward the table 1, for the purpose of producing ashearing'cut upon sheets of paper laid upon the table, as indicated atA, Fig. I. V

7 is a clamp operable in the guideways 4, and which is adapted to belowered in a direct vertical line onto thesheets of paper to be out,prior to the descent of the'knife stock. The clamp 7 has connected to itat its ends vertical rods 8, (see Figs. I and II), and these rods haveconnected to them rack bars 9, operable in suitable ideways providedtherefor, as seen in in 1 lines Fig. III and in dotted lines Fig. II.

10 is a rock shaft journa-led in the end frames 2 and extendinglongitudinally through the paper cutting machine from end to endthereof. ,11 are toothed sectors fixed to said .rock shaft and arrangedin mesh with the rack bars 9, one of the sec tors having associatedwithit a lever arm 12 to which power is communicated by means to behereinafter fully set forth.

13 designates a bracket located at one end. of the machine and extendinglongitudinally of the machine from the end frame 2 by which it issupported, said bracket being surmounted by an upwardly and inwardlyextendingarm 145 which joins the bracket at its lower .end and joins theadjacent end frame at its upper end.

15 is a bracket extending from the second end frame" 2 of the machine.

16 and 17 desi ate rack bars connected at their upper en s to the knifestock 5 and extending downwardly in inclined directions relative to saidknife stock, the rack bar 16 being located at the end of the machineoccupied by the bracket 13 and inclined outwardly at said end within thearm 14:, while the rack bar 17 is located at the end occupied by thebracket 15 and is inclined inwardly toward the and frame 2'. The objectin arranging the rack bars as specified is to provide for an endwisemove ment of the knife stock when it is lowered through the medium ofsaid rack bars and in order that Patented Jan.28,1913.

536,817. Renewed Kay. 7, 1912. aerial No. 695,781.

21 and 22 are driverrack bars in mesh respectively with the spur wheels18 and 19 and by which said spur wheels are operated to cause them tooperate the rack bars 16 and 17 to lower and elevate the knife stock Thedriver rack bars are supported by pivotally mounted guide blocks 23 thatserve to maintain the saidJ'ack bars in engagement with the spur wheels18 and 19.

24 designates a cylinder to which COlIlpressed air is delivered by meansto be hereinafter mentioned and which contains a piston 25 (see dottedlines Fig. II), that carries a piston rod 26. The piston rod 26 isconnected to the lever arm 12 associated with one of the sectors 11, andoperates said lever arm to cause it to impart partial rotation to the'rock shaft '10 and consequently to the two sectors 11 carried by saidshaft. It will be seen that upon the actuation of the sectors, movementis imparted to the rack bars 9 and, as a consequence, the clamp 7 iseither lowered or raised according to the direction of the movement ofthe piston 25 and piston rod 26.

27 designates a second cylinder to which compressed air isv delivered toactuate the knife stock 5. In the cylinder 27 is a piston 28 throughwhich extends a piston rod 29 movable with the piston and projectingthrough both ends of the cylinder. The driver rack bars 21 and 22 areconnected to the ends of the piston rod 29, and upon longitudinalmovement of the piston, said driver rack bars serve to actuate the spurwheels 18 and 19, which in turn perform the'oflice of imparting movementto the rack bars 16 and 17, whereby the knife stock 5, to which the lastnamed rack bars are connected, is either lowered or raised, according tothe direction of movement of the piston rod 29.

30 is a storage reservoir for compressed air, (see dotted lines Fig. Iand full lines Fig. VI).

31 designates a main compressed air sup ply pipe.

' 32 is a controlling valve to which the supplypipe 3] leads and whichis supplied with a handle 33 adapted to be nmvedto control the How ofcompressed air through said valve.

' 34 is a branch pipe leading from the sup ply ipe to the storagereservoir and by whic a restricted degree of pressure of compressed airis constantly maintained in said storage tank, the degree of pressureadmitted to the storage tank through said my machine is operated, sothat the clamp will be carried to the paper, to be'cut and heldthereupon with sufiicient degree of pressure to prevent any movement ofthe paper.

t 37 designates a branch delivery pipe leading from the main deliverypipe. 36 to the cylinder 27 containing the piston 28 by which the knifestock of my machine is operated, said supplemental delivery pipe beingadapted to conduct'compressed air to the cylinder 27 with less rapiditythan it is delivered to the cylinder 24. To provide such difl'erence indelivery, the cylinder24 is arrangedclos'er to the source of supply ofcompressed air than the cylinder 27. and consequently the compressed airis delivered from the main delivery pipe to the cylinder 24 to expandtherein and operate the piston in said cylinder previous to the deliveryof a suflicient degree of pressure medium to' the cylinder 27 to operatethe piston in the last named cylinder.

38 designates a connecting-pipe leading from the end of the cylinder 24,opposite to that to which the main delivery pipe 26 leads, and whichserves to provide communication between the cylinder 25 and the storagereservoir 30.

39 is a connecting pipe providing communication between the storagereservoir 30 .and the end of the cylinder 27 opposite to that to whichthe supplen'iental delivery pipe 39 leads. 1

4O designates an exhaust pipe leading from the valve 32 and which isadapted to be placed in communication, through the medium of said valve,with the main delivery pipe 36.

In the practical use of my paper cutting machine, the pistons 25 and 28in the cylinders 24 and 27, respectively, are brought into service toactuate the clamp 7 and the knife stock 5by flow of compressed air in,the following manner: By operating the handle 33 of the controllingvalve 32, the operator places. the main delivery pipe 36 incommunication with the supply pipe 31. through said valve, and flow ofcompressed air is thereby permitted to take place through said maindelivery pipe to the cylinder 24, with the result of causing movement tobe imparted to the piston in said cylinder, and the lowering of theclamp T into operative position upon a pile of sheets of paper locatedon the table of the ma-' chine beneath the clamp. This actuation of the,clamp occurs before suflicient compressed.

to impart movement to the iston 28 in the last named cylinder. Immeiately after the clamp has been lowered, however,- there is flow ofcompressed air to the cylinder 27 to furnish asuflicient-ly high degreeof pres sure in the last named cylinder to provide for the actuation ofthe piston 28 therein, and-said piston is, therefore, moved and carrieswith it the piston rod 29, whereby the parts 'cotiperable with saidpiston rod are actuated and the knife stock 5 is fgrcibly lowered forcutting action upon the sheets of paper held by the clamp 7. Theoperator next adjusts the handle 33 of the controlling valve so that themain delivery pipe 36 is placed in communication with the exhaustpipe-4O and the air'in said pipe, together 7 with the air that has beendelivered from it,

directly to the cylinder 24 and through the supplemental delivery pipe34 to the cylinder 27 is permitted to find vent through said exhaustpipe. As has been previously mentioned, there is a constantv supply ofcompressed air delivered to the storage reservoir 30 from the mainsupply pipe 31, which is of less degree of pressure force than thecompressed air entering into the delivery pipes 36 and 37 and therefromdirectly to the cylinders .24 and 27. This compressed air in the storagetank performs the office,

by flowing through the connecting pipes 38- and 39 to the cylinders 24and 27, respece tively, of returning the pistons in said cylinders totheir normal positions for the purpose of returning or elevating theclamp 7 and the knife stock 5. Upon each initial movement of the pistons25 and 28, the air present in the ends of the cylinders with which theconnecting pipes 3.8 and 39 communicate is returned to the storagereservoug c It will be readily understood that, inasmuch as thecylinders 24 containing the piston 25 by which the clamp 7 is actuatedthrough the medium of the intervening parts, the clamp may be operatedboth for downward and 'upward movements without the knife stock beingbrought into operation; That is to say, if a sufficient flow ofcompressed air is permitted to How from the supply pipe through themaindelivery' pipe 36 to said cylinder 24'w'ith the result of causingthe clamp to be lowered, said clamp may be again elevated before theknife stock has been lowered for paper cutting action, as all that isrequired to provide for the elevation of the clamp at this time and theprevention of actuation of the knife stock is the discontinuance of flowof compressed air through the main delivery pipe and the establishmentof communication between said main delivery pipe and the exhaust pipe40, with the result of permitting escape of compressed air from the pipe36 to occur and flow of air from the storage reservoir through theconnecting pipe 38 to the cylinder 24 to move the piston therein-for theupward return of theclamp.

1. In a paper cutting'machine,'a clamp and knife stock, a cylinder, apiston operable in said cylinder for moving said knife stock bothdownwardly and upwardly, a second cylinder, a piston operablein saidsecond cylinder and having connection with said clamp independent ofsaid knife stock,

means for conducting compressed air to saidcylinders separately tooperate the pistons therein independently of each other, therebyproviding forindependent movement of the'knife stock and clamp, thecompressed air conducting means, being so arranged as to provide for theactuation of said clamp in either a downward direction or an upwarddirection previous to the actuation of said knife stock.

2. In a paper cutting machine, a clamp and knife stock, a cylinder, apiston operable in said cylinder for moving said knife stock bothdownwardly and upwardly, a second cylinder, a piston operable in saidsec-- ond cylinder and having connection with said clamp independent ofsaid knife stock, means for conducting compressed air to said cylindersseparately to operate the pistons therein independently of each other,thereby providing for independent movement of the knife stock and clamp,the air conducting means comprising compressed air conducting pipesleading direct from-a source of compression to said cylinders to operatethe cylinders in one direction, and a compressed air storage reservoirfrom which compressed air is delivered to the cylinders to move thepistons therein in the other direction.

3. In a paper cutting machine, a clamp and knife stock,,a cylinder, apiston operable in said cylinder for moving said knife stock bothdownwardly and upwardly, a second cylinder, a piston operable in saidsecond cylinder and having connection with said clampindependent of saidknife stock, means for conducting compressed air to said cylindersseparately to op'erate the pistons therein independently of each other,there- .by providing for independent movement of the knife stock andclamp, theair conducting means comprising compressed air conductingpipes leadingdirect from a source of compression to said cylinder tooperate the cylinders in one direction. a compressed air storagereservolr from which compressed air is deliveredto the'cylinders to movethe In testimony whereof, I havehereunto pistons therein in the otherdirection, and afiixed my signature, this 23rd day of Demeans wherebythe pressure of air maincember, 1909.

tained in the storage reservoir is rendered BENJAMIN F. BERRY, 5' lessthan the pressure of air delivered di- In the resence of rectly to thecylinders from the source of E. LINN,

compression. A. J. MoCAULEr.

